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["Ferdinand @ Camptocamp" <887376@xxxxxxxxxxxxxxxxxx>]

+            'balance': "COALESCE(SUM(l.debit),0) " \
	+                       "- COALESCE(SUM(l.credit), 0) as balance",

IMHO must be 
'balance' : "SUM(  COALESCE(l.debit,0) - COALESCE(l.credit),0)  as balance",

I just want to ask if it is not "cheaper" (more performant) to make
debit/credit as required and store 0 as default to avoid execution of
COALESCE for every read...??

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https://bugs.launchpad.net/bugs/887376

Title:
  [6.0 & 6.1] [account] def compute needs optimization

Status in OpenERP Addons (modules):
  Confirmed

Bug description:
  The def compute of account module no use parent_right & parent_left fields for calculate sum(debit) & sum(credit)
  and not in use recursive function's

  These is very slow with a big account chart and very much
  account_move_line

  This can optimizate using parent_left & parent_right

  Im working for a propose merge with the solution.

  Meanwhile i put a script sql with my idea

  	SELECT 	MIN(aa_tree_1.code) AS code,
  		SUM(account_move_line.debit) AS debit, SUM(account_move_line.credit) AS credit
  	FROM account_account aa_tree_1
  	INNER JOIN account_account aa_tree_2
  	   ON aa_tree_2.parent_left 
  	      BETWEEN aa_tree_1.parent_left AND aa_tree_1.parent_right
  	INNER JOIN account_move_line
  	  ON account_move_line.account_id = aa_tree_2.id
  	INNER JOIN account_move
  	  ON account_move.id = account_move_line.move_id
  	  AND account_move.state = 'posted'
  	GROUP BY aa_tree_1.id

  
  These script is functionally without consolidate account, but I'm working

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